remove unused listSum functions
remove unused listSum functions

scala> List[Int](1,2,3).sum
res0: Int = 6

scala> List[Int]().sum
res1: Int = 0

scala> List[Double](1,2,3).sum
res2: Double = 6.0

terokinnunen/lila,ccampo133/lila,pavelo65/lila,pavelo65/lila,TangentialAlan/lila,luanlv/lila,TangentialAlan/lila,TangentialAlan/lila,systemovich/lila,elioair/lila,Unihedro/lila,TangentialAlan/lila,bjhaid/lila,pavelo65/lila,pavelo65/lila,ccampo133/lila,r0k3/lila,samuel-soubeyran/lila,systemovich/lila,luanlv/lila,abougouffa/lila,Enigmahack/lila,Unihedro/lila,JimmyMow/lila,pawank/lila,abougouffa/lila,JimmyMow/lila,systemovich/lila,arex1337/lila,clarkerubber/lila,samuel-soubeyran/lila,bjhaid/lila,luanlv/lila,terokinnunen/lila,pawank/lila,JimmyMow/lila,danilovsergey/i-bur,clarkerubber/lila,arex1337/lila,terokinnunen/lila,abougouffa/lila,danilovsergey/i-bur,clarkerubber/lila,abougouffa/lila,samuel-soubeyran/lila,Happy0/lila,JimmyMow/lila,elioair/lila,Happy0/lila,ccampo133/lila,bjhaid/lila,Enigmahack/lila,clarkerubber/lila,clarkerubber/lila,elioair/lila,arex1337/lila,TangentialAlan/lila,systemovich/lila,arex1337/lila,JimmyMow/lila,Unihedro/lila,terokinnunen/lila,samuel-soubeyran/lila,Happy0/lila,pavelo65/lila,luanlv/lila,danilovsergey/i-bur,samuel-soubeyran/lila,Enigmahack/lila,abougouffa/lila,pavelo65/lila,ccampo133/lila,pawank/lila,clarkerubber/lila,r0k3/lila,terokinnunen/lila,ccampo133/lila,samuel-soubeyran/lila,abougouffa/lila,ccampo133/lila,bjhaid/lila,Happy0/lila,terokinnunen/lila,elioair/lila,luanlv/lila,clarkerubber/lila,r0k3/lila,systemovich/lila,danilovsergey/i-bur,bjhaid/lila,Happy0/lila,elioair/lila,r0k3/lila,TangentialAlan/lila,arex1337/lila,terokinnunen/lila,Happy0/lila,JimmyMow/lila,pawank/lila,arex1337/lila,danilovsergey/i-bur,systemovich/lila,bjhaid/lila,abougouffa/lila,danilovsergey/i-bur,pawank/lila,systemovich/lila,Enigmahack/lila,Enigmahack/lila,elioair/lila,Unihedro/lila,JimmyMow/lila,TangentialAlan/lila,elioair/lila,r0k3/lila,Unihedro/lila,luanlv/lila,pawank/lila,luanlv/lila,pawank/lila,Enigmahack/lila,r0k3/lila,ccampo133/lila,danilovsergey/i-bur,Happy0/lila,Unihedro/lila,r0k3/lila,pavelo65/lila,Enigmahack/lila,bjhaid/lila,samuel-soubeyran/lila,Unihedro/lila,arex1337/lila